DA14582_16 Datasheet, PDF (97/172 Pages) Dialog Semiconductor – Bluetooth Low Energy 4.2 SoC with Audio CODEC

DA14582
Bluetooth Low Energy 4.2 SoC with Audio CODEC
FINAL
Table 130: I2C_TAR_REG (0x50001304)
Bit
Mode Symbol
11
r/w
SPECIAL
10
r/w
GC_OR_START
9:0
r/w
IC_TAR
Description
This bit indicates whether software performs a General Call
or
START BYTE command.
0: ignore bit 10 GC_OR_START and use IC_TAR normally
1: perform special I2C command as specified in
GC_OR_START
bit
If bit 11 (SPECIAL) is set to 1, then this bit indicates whether
a General Call or START byte command is to be performed
by the controller.
0: General Call Address - after issuing a General Call, only
writes may be performed. Attempting to issue a read com-
mand results in setting bit 6 (TX_ABRT) of the
IC_RAW_INTR_STAT register. The controller remains in
General Call mode until the SPECIAL bit value (bit 11) is
cleared.
1: START BYTE
This is the target address for any master transaction. When
transmitting a General Call, these bits are ignored. To gener-
ate a START BYTE, the CPU needs to write only once into
these bits.
Note: If the IC_TAR and IC_SAR are the same, loopback
exists but the FIFOs are shared between master and slave,
so full loopback is not feasible. Only one direction loopback
mode is supported (simplex), not duplex. A master cannot
transmit to itself; it can transmit to only a slave
Reset
0x0
0x0
0x55
Table 131: I2C_SAR_REG (0x50001308)
Bit
15:10
9:0
Mode
-
r/w
Symbol
-
IC_SAR
Description
Reserved
The IC_SAR holds the slave address when the I2C is operat-
ing as a slave. For 7-bit addressing, only IC_SAR[6:0] is
used. This register can be written only when the I2C inter-
face is disabled, which corresponds to the IC_ENABLE reg-
ister being set to 0. Writes at other times have no effect.
Reset
0x0
0x55
Table 132: I2C_DATA_CMD_REG (0x50001310)
Bit
Mode Symbol
15:9 -
-
Description
Reserved
Reset
0x0
Datasheet
CFR0011-120-01
Revision 3.0
97 of 172
08-Nov-2016
© 2015 Dialog Semiconductor